Question : Conforming to new Java syntax

I am working on some code that looks like this...

      1) Map<Integer, ColumnData> columnValues = data.getColumnValues();
            
      2) Iterator it = columnValues.entrySet().iterator();
      3) while (it.hasNext()) {
            4) Map.Entry<Integer, ColumnData> value = (Map.Entry)it.next();
                                  .........
I am getting the following warnings
               on line 2) Iterator is a raw type. References to generic type Iterator<E> should be parameterized
               on line 4) Map.Entry is a raw type. References to generic type Map<K,V>.Entry<K,V> should be parameterized

the code works fine....I just want to clean up the warnings....how do I do that and conform to Java syntax.

Answer : Conforming to new Java syntax

Iterator:

1:	Iterator<Map.Entry<Integer, ColumnnData>> it = columnValues.entrySet().iterator();